(19)

(11)

EP 2 751 433 A2

(12)

(88) Date of publication A3: 21.02.2013 (43) Date of publication: 09.07.2014 Bulletin 2014/28 (21) Application number: 12807645.2 (22) Date of filing: 29.06.2012

(51) International Patent Classification (IPC):  F15B 21/08(2006.01) F15B 15/18(2006.01) F15B 13/044(2006.01) F15B 11/17(2006.01) (86) International application number: PCT/US2012/044888 (87) International publication number: WO 2013/006423 (10.01.2013 Gazette 2013/02)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 01.07.2011 US 201161503761 P (71) Applicant: Eaton Corporation Cleveland, Ohio 44114-2584 (US)	(72) Inventor: DYBING, Philip, James Canton, MN 55922 (US) (74) Representative: Schwan Schorer & Partner mbB  Patentanwälte Bauerstrasse 22 80796 München 80796 München (DE)